Piwowar, Arkadiusz. “THE IMPORTANCE OF A PRODUCT BRAND FOR AGRICULTURAL PRODUCERS WHEN PURCHASING MINERAL FERTILIZERS”. Acta Scientiarum Polonorum. Oeconomia 11, no. 1 (March 30, 2012): 61-68. Accessed May 11, 2024. https://js.wne.sggw.pl/index.php/aspe/article/view/4045.